Rasyadi, Muhammad Emir Hanif (2017) Pembuatan Kawat Monofilamen Superkonduktor MgB2 Secara In-Situ Menggunakan Metode Powder-In-Tube (PIT). Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Telah diteliti
pembuatan kawat monofilamen
superkonduktor
MgB
2
dengan menggunakan metode
p
owder
-
in
-
t
ube
dengan variasi
komposisi Mg
terhadap B
yakni 0,90, 1,00 dan 1,10
sedangk
an
komposisi Boron tetap
. Serbuk p
rekursor yang digunakan adalah serbuk
Mg
(98%)
dan serbuk B (95
%)
.
Bahan
dicampur
dan
digerus selama 30
menit lalu
dimasukkan ke dalam tabung
stainless s
teel
316.
Selanjutnya
Tabung
diberikan perlakuan
mekanis
r
olling
untuk membuat
kawat
monofilamennya. Kawat kemudian dipotong
menjadi ukuran
lebih kecil
kemudian
dipanaskan pada suhu 800
o
C
selama 2 jam. Hasil pemanasan
kemudian
diuji suhu k
rit
i
snya lalu
dikarakterisasi dengan XRD dan
SEM
.
Dari hasil pengujian
didapat
bahwa
pembuatan kawat secara
i
n
-
s
itu
dengan metode
powder
-
i
n
-
t
ube
dapat membuat kawat monofilamen
superkonduktor MgB
2
dengan
fasa dominan MgB
2
sekitar 95% dan
memiliki fasa pengotor MgO
sekitar 5%. MgO terbentuk
akibat oksidasi
yang terjadi pada serbuk MgB
2
didalam kawat.
Komposisi Mg:B yang
optimal untuk membuat kawat ini ada pada komposisi 1:2 karena
memiliki kurva resistivita
s
yang bagus
dengan nilai
Tc
Onset
sebesar
41,67 K
dan
Tc Zero
40,89 K
.
Akan tetapi terdapat
porositas pada kawat
yang terjadi
karena reduksi volume dari reaksi Mg+2B ditambah
terjadinya evaporasi pada Mg
===================================================================================
In this research we have studied the making of MgB2
supercond
ucting monofilament wire using powder
-
in
-
t
ube method with
variation of Mg composition to B ie 0.90, 1.
00 and 1.10, while Boron
remains
The precursor used is Mg powder (98%)
and powder B (95%
)
Both materials are mixed and then crushed with agate mortar for 30
minutes and th
en put into the tube stainless s
teel 316. The tube is then
subjected to a mechanical
treatment of
r
olling to form its monofilament
wire. The wire is then cut and sintered at a temperature of 800
o
C for
2 hours. After that we
test
the critica
l temperature then characterize the
samples
by XRD and SEM
From the result of
this research
i
t w
as found
that
i
n
-
situ wire
-
making by powder
-
in
-
t
ube method can make MgB
2
superconducting monofilament wire
with
MgB
2
as the dominant phas
e
around 95%
and MgO
as the impurity phase
around 5%. MgO is
formedd
ue to the oxidation occurring in the MgB
2
powder inside the
wire.
The optimal Mg:B composition
to make this wire is in the 1:2 composition Because it has a good resistivity curve with a high enough
Tc Onset that is 41,67 K and Tc Zero 40,89 K. However, there is a porosity in the wire due to the volume reduction of the Mg + 2B reaction plus the evaporation of Mg
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Uncontrolled Keywords: | superkonduktivitas, magnesium diboride, PIT, komposisi, superconductivity, composition |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) > TA645 Structural analysis (Engineering) T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK7872 Electric current converters, Electric inverters. T Technology > TN Mining engineering. Metallurgy |
| Divisions: | Faculty of Industrial Technology > Physics Engineering > 30201-(S1) Undergraduate Thesis |
| Depositing User: | Muhammad Emir Hanif Rasyadi |
| Date Deposited: | 13 Oct 2017 02:34 |
| Last Modified: | 06 Mar 2019 04:29 |
| URI: | http://repository.its.ac.id/id/eprint/46832 |
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